{"id":9671,"date":"2012-10-01T16:33:43","date_gmt":"2012-10-01T15:33:43","guid":{"rendered":"https:\/\/www.acasinhadamatematica.pt\/?p=9671"},"modified":"2021-12-31T22:42:48","modified_gmt":"2021-12-31T22:42:48","slug":"qual-e-o-numero","status":"publish","type":"post","link":"https:\/\/www.acasinhadamatematica.pt\/?p=9671","title":{"rendered":"Qual \u00e9 o n\u00famero?"},"content":{"rendered":"<p><ul id='GTTabs_ul_9671' class='GTTabs' style='display:none'>\n<li id='GTTabs_li_0_9671' class='GTTabs_curr'><a  id=\"9671_0\" onMouseOver=\"GTTabsShowLinks('Enunciado'); return true;\"  onMouseOut=\"GTTabsShowLinks();\"  class='GTTabsLinks'>Enunciado<\/a><\/li>\n<li id='GTTabs_li_1_9671' ><a  id=\"9671_1\" onMouseOver=\"GTTabsShowLinks('Resolu\u00e7\u00e3o'); return true;\"  onMouseOut=\"GTTabsShowLinks();\"  class='GTTabsLinks'>Resolu\u00e7\u00e3o<\/a><\/li>\n<\/ul>\n\n<div class='GTTabs_divs GTTabs_curr_div' id='GTTabs_0_9671'>\n<span class='GTTabs_titles'><b>Enunciado<\/b><\/span><\/p>\n<p>Qual \u00e9 o n\u00famero que multiplicado por $-5$ \u00e9 igual a $225$?<\/p>\n<p><div class='GTTabsNavigation' style='display:none'><span class='GTTabs_nav_next'><a href='#GTTabs_ul_9671' onClick='GTTabs_show(1,9671)'>Resolu\u00e7\u00e3o &gt;&gt;<\/a><\/span><\/div><\/div>\n\n<div class='GTTabs_divs' id='GTTabs_1_9671'>\n<span class='GTTabs_titles'><b>Resolu\u00e7\u00e3o<\/b><\/span><!--more--><\/p>\n<blockquote>\n<p>O produto de dois n\u00fameros com o <strong>mesmo sinal<\/strong> \u00e9 um <strong>n\u00famero positivo<\/strong> igual ao produto dos valores absolutos dos fatores. $$\\begin{array}{*{20}{c}} {\\left( { + 3} \\right) \\times \\left( { + 7} \\right) = 21}&amp;{}&amp;{\\left( { &#8211; 9} \\right) \\times \\left( { &#8211; 2} \\right) = 18} \\end{array}$$<\/p>\n<\/blockquote>\n<blockquote>\n<p>O produto de dois n\u00fameros de <strong>sinais diferentes<\/strong> \u00e9 um <strong>n\u00famero negativo<\/strong> cujo valor absoluto \u00e9 igual ao produto dos valores absolutos dos fatores. $$\\begin{array}{*{20}{c}} {\\left( { + 4} \\right) \\times \\left( { &#8211; 5} \\right) =\u00a0 &#8211; 20}&amp;{}&amp;{\\left( { &#8211; 6} \\right) \\times \\left( { + 4} \\right) =\u00a0 &#8211; 24} \\end{array}$$<\/p>\n<\/blockquote>\n<p>\u00ad<br \/>\nEscrevendo em linguagem matem\u00e1tica, pretendemos determinar o n\u00famero $\\left( ? \\right)$, tal que: $$ &#8211; 5 \\times \\left( ? \\right) = 225$$<\/p>\n<p>Pela regra de sinais na multiplica\u00e7\u00e3o, conclui-se que o n\u00famero $\\left( ? \\right)$ \u00e9 negativo.<\/p>\n<p>Por outro lado, o seu valor absoluto ser\u00e1: $$\\left| {\\left( ? \\right)} \\right| = \\frac{{\\left| {225} \\right|}}{{\\left| { &#8211; 5} \\right|}} = \\frac{{225}}{5} = 45$$<\/p>\n<p>Portanto, o n\u00famero pedido \u00e9 $-45$.<\/p>\n<div class='GTTabsNavigation' style='display:none'><span class='GTTabs_nav_prev'><a href='#GTTabs_ul_9671' onClick='GTTabs_show(0,9671)'>&lt;&lt; Enunciado<\/a><\/span><\/div><\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>Enunciado Resolu\u00e7\u00e3o Enunciado Qual \u00e9 o n\u00famero que multiplicado por $-5$ \u00e9 igual a $225$? Resolu\u00e7\u00e3o &gt;&gt; Resolu\u00e7\u00e3o &lt;&lt; Enunciado<\/p>\n","protected":false},"author":1,"featured_media":19271,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[317,97,318],"tags":[428,320,319],"series":[],"class_list":["post-9671","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-7-o-ano","category-aplicando","category-numeros-inteiros","tag-7-o-ano","tag-multiplicacao","tag-numeros-inteiros-2"],"views":1853,"jetpack_featured_media_url":"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2021\/12\/Mat92.png","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/9671","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9671"}],"version-history":[{"count":0,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/9671\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/media\/19271"}],"wp:attachment":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9671"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9671"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9671"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fseries&post=9671"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}